Cathodic protection systems are utilized to shield metallic structures from damaging metal-loss. These illustrations demonstrate a few common applications.

• Underground Pipelines - Galvanic System - Galvanic systems are commonly used on underground structures because they are cost-effective and do not require an external power source.
• Deep-Well Anode Installation - Impressed Current System - Impressed Current Cathodic Protection (ICCP) systems are effective when protective current requirements are high, the soil or water resistivity is increased or a long system life is required.
• Pier Pipe Piles - Impressed Current System - The corrosion of metallic structures in seawater can be reduced to a low value by the application of cathodic protection. Impressed-current systems use direct current from a low-voltage source that is introduced into the seawater at a suitable distance from the pier pipe-piles.
• Surface Condenser Waterbox - Impressed Current System - The surface condenser waterbox, tubes and the tube sheet can all be made of different metal alloys that are in contact with the circulating water. The water becomes the electrolyte between the metal alloys creating electrolytic corrosion. An impressed current cathodic protection system consisting of probe anodes can be employed to mitigate this problem.

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